Investigating static voltage stability of distribution system with rooftop PV units

Author

Yaghoobi, Jalil ; Mithulananthan, N. ; Saha, Tapan K. ; Bansal, R.C.

Author_Institution

Sch. of Inf. Technol. & Electr. Eng., Univ. of Queensland, Brisbane, QLD, Australia

fYear

2013

fDate

Sept. 29 2013-Oct. 3 2013

Firstpage

1

Lastpage

6

Abstract

Photovoltaic (PV) in high penetration level can help the static voltage stability by increasing the loadability of the system. This paper presents an analytical approach to assess the possibility of improvement in the loadability of a distribution system by real and reactive power injection from PV. In order to achieve this, a two-bus equivalent network is considered to represent the power system. The phase angles of line and load impedances of this equivalent circuit can be adjusted to reflect the characteristics of a distribution system. For different line and load parameters, change in the loadability of the system by injecting power from PV is simulated and compared. Analytical expressions, based on results from simple two-bus networks, are verified by estimating change of the loadability in IEEE-37 distribution test system.

Keywords

IEEE standards; distributed power generation; load (electric); photovoltaic power systems; power system stability; reactive power; voltage control; IEEE-37 distribution test system; distribution system; equivalent circuit; load impedance; reactive power injection; rooftop PV units; rooftop photovoltaic units; static voltage stability; two bus equivalent network; Impedance; Active and Reactive Power; Loadability; PV; Static Voltage Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference (AUPEC), 2013 Australasian Universities

Conference_Location

Hobart, TAS

Type

conf

DOI

10.1109/AUPEC.2013.6725357

Filename

6725357